SPHENOID BONE :
Sphenoid bone occupies the middle portion of the base of the
skull and it articulates with the occipital,temporal,parietal and frontal bones.
It links the cranial and facial bones ,and cross-braces the
skull.
On the superior surface in the middle of the bone is a
little saddle-shaped depression,the hypophyseal fossa (sella turcica) in which
the pituitary glands rests.
The body of the bone contains some fairly large air sinuses
lined with ciliated mucous membrane with openings into the nasal cavity.
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